﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.ViewManagement;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;

// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=234238

namespace OsirisTester
{
    /// <summary>
    /// An empty page that can be used on its own or navigated to within a Frame.
    /// </summary>
    public sealed partial class GridManagerTester : OsirisTester.Common.LayoutAwarePage
    {
        public GridManagerTester()
        {
            this.InitializeComponent();
        }

        protected override void OnNavigatedFrom(NavigationEventArgs e)
        {
            //base.OnNavigatedFrom(e);
        }

        /// <summary>
        /// Invoked when this page is about to be displayed in a Frame.
        /// </summary>
        /// <param name="e">Event data that describes how this page was reached.  The Parameter
        /// property is typically used to configure the page.</param>
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
        }

        private void GoBack(object sender, RoutedEventArgs e)
        {
            //if (this.UsingLogicalPageNavigation() && itemListView.SelectedItem != null)
            //{
            //    // When logical page navigation is in effect and there's a selected item that
            //    // item's details are currently displayed.  Clearing the selection will return
            //    // to the item list.  From the user's point of view this is a logical backward
            //    // navigation.
            //    this.itemListView.SelectedItem = null;
            //}
            //else
            {
                // When logical page navigation is not in effect, or when there is no selected
                // item, use the default back button behavior.
                base.GoBack(sender, e);
            }

        }

        private bool UsingLogicalPageNavigation(ApplicationViewState? viewState = null)
        {
            if (viewState == null) viewState = ApplicationView.Value;
            return viewState == ApplicationViewState.FullScreenPortrait ||
                viewState == ApplicationViewState.Snapped;
        }
    }
}
